Workshop on highly resolved wind field modeling in the lower PBL using MM5 and WRF

 

 

                                                                                                                        Oldenburg, 18-12-2003

 

Dear Sir, Dear Madame,

 

The Energy and Semiconductor Research Laboratory (EHF) at the Institute of Physics, University of Oldenburg, Germany is hosting a workshop on the modelling of wind fields within the boundary layer up to about 200m using MM5 at high horizontal and vertical resolution. The workshop is taking place from the 23rd till the 26th of February 2004 in Oldenburg, Germany.

 

This workshop is ment for MM5 users in Europe that are focusing on wind field modelling for wind energy usage and / or modelling at high resolutions. The structure of the workshop is open, dynamic and interactive.

 

We have invited Cindy Bruyere of the NCAR, Boulder, USA, who is a scientist working on MM5 at NCAR. She will give several lectures /talks on using MM5 for the lower planetary boundary layer region.

 

Test case

Throughout the workshop we want to present the results on a small run. We would like you to perform a run at your institute / university. In this way we want to gather as many results as possible from as many different countries as possible.The idea is that you make a run for three  PBL-schemes for 5 days for a certain stability class (stable, unstable, or neutral situation), and use the results to plot three vertical profiles of the average wind speed (including its errors) in comparison to a vertical wind profile calculated from measured data. NCEP data of the last year are available for 1*1° horizontal resolution, so this could be a good year to run the model for. For this please inform us also if you have access to meteorological mast data to validate the model with.

 

The admission fee of the workshop is €100,-. For applying please send an email to: tim.de.paus@uni-oldenburg.de, please mention if you are willing to participate in the test case. Please also mention if you are willing to give a presentation on your MM5 research methods and/or results. Applications should preferably be sent before the 23rd of January 2004.

 

 

If you would like to see what we are doing, please check:

 

http://www.energiemeteorologie.de/projects/windeng_em.html

 

and:

 

http://www.windeng.net

 

More details on finding a hotel and how to get to Oldenburg will be announced through this website.

 

 

Hope to hear from you soon!

 

Best regards,

Tim de Paus

 

 

A preliminary agenda is:

 

(Optional: Day 0  Discussions and ideas on visualisation techniques together with Cindy Bruyere)

 

 

Day 1

 

9:00    Opening / Introduction

 

9:15    Presentation of attendants (5 min., max 2 sheets (without PC/laptop))

 

10:30  Coffee/Tea break

 

11:00  Introduction Cindy Bruyere NCAR & Lecture Cindy Bruyere

 

 

 

12:30  Lunch

 

14:00  Lecture Cindy Bruyere

 

15:30  Coffee / Tea Break

 

15:45  Lecture Cindy Bruyere

 

17:30  Social Event

 

 

Day 2

 

9:00   Presentation of results of test case run (for a certain stability class) by organising network and  attendants &  Discussion I

 

10:30  Coffee/Tea break

 

11:00  Discussion groups ‘methods’: theme1 theme2 theme3

 

12:30  Lunch

 

14:00  Presentation of two participants´ methods

 

15:30  Coffee / Tea Break

 

15:45  Discussion groups ‘methods’: theme4 theme5 theme6

 

 

 

Day 3

 

9:00   Presentation of results of test case run (for a certain stability class) by organising network and  attendants &  Discussion II

 

10:30  Coffee/Tea break

 

11:00  Discussion groups ‘results’: theme1 theme2 theme3

 

12:30  Lunch

 

14:00  Presentation of two participants´ results

 

15:30  Coffee / Tea Break

 

15:45  Discussion groups ‘results’: theme4 theme5 theme6

 

17:30  Reflection on Workshop & Summary

 

 

Extra

At the workshop an inventory of configuration-decks (decks & namelists & configure.user) for each location for each attendant will be made.

 

 

Lectures

The lectures by Cindy Bruyere of NCAR will cover the following topics (preliminary information):

1)Introduction to PBL

2)Closure schemes

3)Similarity theories

4)MM5 and PBL

5)FDDA

 

 

Discussion groups

In addition to discussing the themes of the lectures, the attendants will be able to discuss some of the following topics (should there be a topic you miss in this list, please inform us so we can take this into account):

 

TERRAIN domain size / nesting

What are the domain sizes based on? How is the domain size influencing the results?

 

Initialisation

What are the general features of different type of analysis data (es. what are the main differences between between a FNL NCEP analysis and ECMWF)?

 

Skin (or surface) temperature seems to be a critical parameter for many analysis (see reanalysis, ECMWF). Which features present skin/surface temperature  of analysis currently available and what are the implication for MM5 model? How accurate is the sea surface temperature?

 

Configuration of the run

Which configuration (input data, data assimulation) is the best for a real time simulation (forecast) and which is best suitable for long term simulation of a past situation?

 

Data assimilation

What is the exact difference in functionality of the different kind of data assimilation availabe for MM5 (e.g  which are difference between 4DDA, 3DVAR?)

 

Does surface data assimilation add sensibly accuracy to the simulation?

Does observational data assimilation coming from a 100 m mast add some information or flow in this region is completely parameterized?

PBL modelling up to 200 m

What are the results so far? (in addition to test case)